 The united Okinawan state was called the Ryūkyū Kingdom, but would continue to be referred to as "Chūzan" in various official documents of the Ryukyuan royal government, and those of many other states in the region.Tamagusuku succeeded his father Eiji as king of Okinawa at the age of nineteen, in 1314.However, he lacked the charisma or leadership abilities to command the respect and loyalty of the various territorial lords ("aji"), and many rebelled soon afterwards.